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During the design of the crossover network the acoustic,
mechanical and electrical interactions of the high and low
frequency sections have been fully analysed. The crossover is
therefore an integral part of the design of the system. The
crossover network provides complex equalisation in both
amplitude and phase for both LF and HF drive unit and fully
integrates the response at the crossover point.
All components are high precision, low-loss and thermally stable.
Very high quality specially damped and treated audio grade
polypropylene capacitors are used for the high frequency feed.
Large, low hysteresis laminated iron core inductors avoid
distortion and saturation effects. The individually hard wired
components are laid out to minimise inter component coupling
and are placed well away from the driver magnetic field. Van
den Hul high purity silver-plated copper wiring is used
throughout the internal connections in the loudspeaker.
The Crossover Network
The cabinet carcass is constructed from 15mm birch plywood
with a 30mm birch plywood front baffle. Carefully selected solid
hardwood mouldings and veneers have been hand finished to
exacting standards. The wood should only be cleaned with a dry
cloth or with a light application of quality non-silicone furniture
polish, taking care not to get polish on the grille cloth or any
part of the HF and LF drive units.
In common with all solid wood furniture, exposure to extremes
of heat, cold and varying humidity will cause the wood to ease
slightly. Therefore it is recommended that the loudspeaker is
protected from environmental extremes to guard against any
such occurrence. Any wood will change colour when subjected
to the UV content of ambient light. Although the cabinet is
protected by an anti ultra violet lacquer, a light veneer such a
Cherry will darken naturally over time to a rich natural golden
colour.
Care of the Cabinet
Faultfinding
Esoteric loudspeakers are designed and manufactured to be
reliable. When a fault occurs in a hi-fi system the effect is always
heard through the loudspeakers although they may not be the
source of the fault. It is important to trace the cause of the
problem as accurately as possible. A fault heard on one source
only (for example CD or Phono for instance) is most unlikely to
be a loudspeaker problem. Loudspeakers do not in themselves
generate hum, hiss or rumble although high quality, wide
bandwidth loudspeakers may emphasise such problems.
Quality
The manufacture of Esoteric loudspeakers follows a policy of
stringent quality control procedures using sophisticated
measurement facilities. All drive units are designed and
manufactured specifically for the MG-10 and MG-20 models. All
incoming parts are thoroughly tested to ensure that they are as
specified. Not only is all data computerised, but rigorous testing
procedures during construction ensure every loudspeaker meets
or exceeds our exacting standards.
Caution
The high peak power handling of Esoteric loudspeakers will
allow responsible use with larger amplifiers on wide dynamic
range material. Take care with any amplifier, irrespective of
power output, to avoid abnormal conditions such as switch on
surges or output overload (clipping) that may result in peaks of
power measuring greatly over the rated output.
